3S技术支持下的公路路域景观格局特征变化研究

3S（GPS，RS，GIS）技术在土地资源调查、土地利用变化调查等的应用非常广泛，文章以思茅-小勐养高速公路为应用案例，对其建设前（1996年）、建设后（2007年）两个时相的Landsat5-TM遥感数据的公路路域不同缓冲区范围内的土地利用/土地覆被变化（LUCC）、景观结构动态变化进行分析，结果表明:景观生态学作为一门新兴的学科，可以为公路景观环境评价研究提供新理论、方法和技术手段；高速公路线性走廊对景观是一种线性切割过程，离公路距离越近的缓冲区，景观指标值的变化幅度越大，公路修建对近距离缓冲区内景观格局的影响越大，反之则影响减小。

Application of Landscape Ecology in Road Field Environment Variation Based on 3S Tenchnique

Based on 3S technique, the research analyzed the different buffer LUCC and landscape pattern by the satellite data of Landsat5-TM in 1996 and 2007 by the case of Simao-Xiaomengyang highway. The results indicated: as a rising subject landscape ecology can offer new theory, method and technique means for the road landscape environmental estimation research; the highway is a incising course for the landscape, the buffer nearer to the road, the bigger range the landscape index vary and the bigger the road construction impact the landscape environmental pattern and contrarily, the smaller the construction impact the environment.